Sumali sa IDNStudy.com at simulang makuha ang maaasahang mga sagot. Ang aming platform ng tanong at sagot ay idinisenyo upang magbigay ng mabilis at eksaktong sagot sa lahat ng iyong mga tanong.
Answer:
Subtract : 7x + 2y = 19
-7x + 8y = 13
this is equal to -6y=5 where y will be equal to -5/6
then let y= -5/6
choose any equation
let have 7x + 2(-5/6) = 19
=> 7x + -5/3 = 19
=> 7x = 19 + 5/3
=> 7x = 62/3
x= 62/3 divided by 7
x= 434/3
on the other hand
x for the other equation would be 79/21